Use these options to specify how the date range returns results. "Exact" means that the start and end dates of descriptions returned must fall entirely within the date range entered. "Overlapping" means that any description whose start or end dates touch or overlap the target date range will be returned.

This CD-Rom provides an opportunity to users to familiarise themselves with the role and inner workings of NATO through words and images. It charts the evolution of the Alliance and describes the adaptation it has undergone to enable it to address the security challenges of the 21st century.